13 Lines Land L2are parallel Find the measure of x A 630 63

13. Lines L,and L2are parallel. Find the measure of x. A. 630 63 L1 C. 153 B. 126° L2 14. Lines L1and L2are parallel. Find the measure of y A. 133 C. 430 B. 47 D. 1470 L1 1330 y. 2 15. Lines L1and L2 are parallel. Find the measure of x. 770 L A. 103 _ C. 13 B. 77° D. 157 2

Solution

13.

x + 63 = 180
x and 63 are supplementry angles , therefore adding upto 180
x+63 = 180
x=117

14.

Alternate interior angles y and 133
y = 133

15.

77 and x are equal angles as they are on same of parallel lines
x=77

25.

dia=10 inch
circumference = 2*pi*r = 31.4
option B

26.

2*pi*r = 3.14*(2r) = 3.14*1 = 3.14
C is between 3 and 4

27.

r=5
circumference = 2*pi*r = 31.4
B is right

28. .5*a*b = .5*3.5*4 = 7

29. .5*a*b = .5*4.5*6 = 13.5

30. This is the right triangle as 5^2 = 3^2+4^2. So, .5*a*b=.5*3*4= 6